WeatherFlow displays wind direction on its applications with the idea that the icon is the head of a vector. Think of the wind as a particle moving from A to B. The direction of the point is the direction of wind flow. We have been using this same convention on websites for the last 15 years with few complaints. When we surveyed our users, the overwhelming majority favored the way we present it now. In future versions we may add the option for the user to set the direction type.